In 1989, the Watchtower Bible and Tract Society published a pamphlet entitled Should You Believe in the Trinity? This pamphlet, of which millions were distributed, remains a resource on the Jehovah's Witnesses' official website.

Later that year, Robert M. Bowman Jr. published a point-by-point response to the pamphlet. His book, Why You Should Believe in the Trinity: An Answer to Jehovah's Witnesses, remained in print for many years. Over the years, the book proved very helpful both to Christians engaging Jehovah's Witnesses in discussions and to Jehovah's Witnesses transitioning to a sound Christian faith. At a conference of former Jehovah's Witnesses in 2022, several attendees commented that they still had their copy of the book and that it had been instrumental in their accepting and understanding the doctrine of the Trinity.

Dr. Bowman has now brought the book back into print in a second edition. Other than a few references to the Watchtower's 2013 edition of its New World Translation, the book's citations are still all from works written or published in 1989 or earlier, and its arguments are almost entirely as they were in the first edition. Instead of producing a new book, the author has thoroughly edited it for style, checked its citations for accuracy, clarified various points, and made a few corrections and other necessary changes. The book thus remains a direct response to the Jehovah's Witness publication in its 1989 context. Yet it also is of great benefit to today's readers, not just as a rebuttal to the Watchtower's arguments, but as an accessible introduction to the positive reasons for believing in the doctrine of the Trinity.